July 4th was independence day in the United States, which saw thousands of fireworks displays across the country - most notably in the capital Washington DC.
http://metro.co.uk/2013/07/05/gallery-window-on-the-world-5th-july-2013-3870115/
http://metro.co.uk/2013/07/05/gallery-window-on-the-world-5th-july-2013-3870115/